Now im no expert on this so just my way and it works
STUFF YOU WILL NEED
1-METAL POLISH OF COURSE
2-MICROFIBRE PAD

So what I do and works for me just fine apply a little to the edge of the pad as shown

Then wipe lightly over the entire bit your cleaning

Nice even layer all over

Then i carry on useing it flat and giveing it a good rub all over till much cant be seen.Straight lines up and down is my way if possible

Then I simply just wipe it off with a microfibre cloth maybe two at a push if the polish is black bright.
Leaveing you with a mucky pad

And one clean can


Then I hit stage two sealent

THIS SEAL AND MAKES STUFF BEAD

So wipe on with a clean microfibre pad
Tiny bit goes a long way

Then leave at least 15 minutes

Then just wipe off when its gone to a haze

It adds protection and removes any residue from metal polish aswell